/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.bifromq.basekv.store.range;

import com.google.protobuf.ByteString;
import org.apache.bifromq.basekv.proto.Boundary;
import org.apache.bifromq.basekv.proto.KVRangeId;
import org.apache.bifromq.basekv.proto.KVRangeSnapshot;
import org.apache.bifromq.basekv.proto.State;
import org.apache.bifromq.basekv.store.api.IKVWriter;

interface IKVRangeWritable<T extends IKVRangeWritable<T>> extends IKVRangeMetadataUpdatable<T> {
    void migrateTo(KVRangeId targetRangeId, KVRangeSnapshot rightRangeSnapshot);

    Migrater startMerging(MigrationProgressListener progressListener);

    IKVWriter kvWriter();

    interface Migrater {
        Migrater ver(long ver);

        Migrater state(State state);

        Migrater boundary(Boundary boundary);

        void put(ByteString key, ByteString value);

        void abort();
    }

    interface MigrationProgressListener {
        void onProgress(int count, long bytes);
    }
}
